Ketchup with Onions (Onion Ketchup)

Ketchup with onions takes traditional ketchup and makes it extra zippy with onions, brown sugar, butter, and white vinegar. Onion ketchup is sweet, tangy, and so delicious.

My dad loved ketchup while we were growing up and it used to drive my mother crazy because he loved putting it on everything. I remember her complaining to him that he was unable to taste the food she made.

I do understand her point but I also understand how much my dad loved ketchup.

He would have loved this onion ketchup and I wish he could have tried it. My husband, who is also a ketchup fan, can eat this ketchup with onions almost out of a bowl.

He loves this stuff that much and if you're a ketchup lover, you will too.

Onion Ketchup

This was inspired by my easy red chicken recipe, and pairs well with this air fryer chicken fries or grilled cheese and tomato.

Ketchup with Onions Ingredients

It only takes a handful of ingredients to make this simple recipe. You'll find everything you need easily at your local grocery store.

• white onion
• butter
• brown sugar
• white vinegar
• ketchup

See the recipe card below for exact quantities.

Ketchup with Onions Instructions

It only takes a few simple steps and a few minutes to make this tasty recipe.

Step 1: Heat your Skillet and Cook the Onions

Heat skillet over medium heat to medium-low heat, add butter, and melt it, stirring frequently. Add onions and sprinkle brown sugar over top.  Saute and stir caramelized onions regularly.

Step 2: Finish the Onions

Reduce heat to low and stir in white vinegar and tomato ketchup. Simmer, stirring occasionally, until thickens.

Serve.

Hint: Always cook the onions on medium-low heat to ensure the onions caramelize and don't crisp.

Substitutions

Don't have the correct ingredients on hand or want to change something up? Here are some helpful tips for you to change this onion ketchup.

• White Onion - Use a yellow or purple or red onion to alter the flavor somewhat.
• White Vinegar - Use apple cider vinegar.

Variations

Want to personalize this onion ketchup recipe? Here are some of my tried and true tips for changing up this recipe.

• Spicy - Add chili pepper flakes, some diced jalapeno or your favorite hot pepper or some hot sauce or sriracha to add some heat
• Onion - Add another onion for even more onion flavor if you love onions as much as my husband
• Shallots - Add one or two with your onions to add a different level of flavor
• Ketchup- Use chili sauce instead for a different experience
• Mustard - Add a little of your favorite to elevate the onion ketchup to a new level
• Bacon - Add cooked, diced bacon with a little rendered bacon fat and you're sure to be impressed
• Vegetables - Add diced roasted red peppers, corn, broccoli, carrots, or mashed butternut squash
• Blender - Use an immersion blender to puree the ketchup if you prefer a smoother or smooth texture

If you love recipes like this, you may also enjoy this caramelized onion dip.

Storage

This ketchup with onions can be stored in an airtight container, inside your fridge, for up to three weeks.

Onion Ketchup Tips

This recipe is so simple, I don't have much in the way of tips. You only need to remember a couple of things.

• Keep the heat low. You're caramelizing the onions, not browning them.
• The longer you simmer this ketchup (within reason) the better it will be. Keep it covered to prevent it from reducing too much.

FAQ

Do you have questions about ketchup with onions? Here are some of the most commonly asked questions about onion ketchup.

Video

More Onion Recipes

Do you like onions? Here are some recipes you may also like to try.

Onion Ketchup

Ready to get cooking? Remember that you can print this recipe if you would like.